[RMMV] IS IT POSSIBLE TO HAVE THIS TYPE OF EXP GAIN?

class Window_Base
  # Allows use of a smaller face display.
  def draw_actor_face_short(actor, x, y, enabled=true)
    bitmap = Cache.face(actor.face_name)
    xpos = actor.face_index % 4 * 96
    ypos = actor.face_index / 4 * 96
    rect = Rect.new(xpos, ypos, 96, 56)
    contents.blt(x, y-8, bitmap, rect, enabled ? 255 : translucent_alpha)
    bitmap.dispose
  end
end

module BattleManager
  # The party wins a battle, and earns EXP/money.
  def self.process_victory
    play_battle_end_me
    replay_bgm_and_bgs
    $game_message.add(sprintf(Vocab::Victory, $game_party.name))
    display_exp
    gain_gold
    gain_drop_items
    SceneManager.return
    battle_end(0)
    return true
  end

  # Displays the EXP window.
  def self.display_exp
    # The following line may be edited depending on the maximum party-size involved.
    # This writing assumes a standard four-person party.
    @window = Window_BattleResults.new(0, 0, Graphics.width, 56*2+18)
    @window.draw_result
    gain_exp
  end
  
  # Allows the an external method to removes the EXP-window from the display.
  def self.window_dispose
    @window = nil
  end
end

# This defines the EXP-window.
class Window_BattleResults < Window_Base
  # Places face-graphics and the assoicated EXP gain.
  def draw_result
    i = 0
    while i < $game_party.members.size
      actor = $game_party.members[i]
      if i % 2 == 0
        draw_actor_face_short(actor, 0, 30*i)
        draw_actor_name(actor, 85, 30*i)
        draw_actor_level(actor, 165, 30*i)
        draw_actor_exp(actor, 165, 30*i+24)
      else
        x = Graphics.width/2
        draw_actor_face_short(actor, x, 30*(i-1))
        draw_actor_name(actor, 85+x, 30*(i-1))
        draw_actor_level(actor, 165+x, 30*(i-1))
        draw_actor_exp(actor, 165+x, 30*(i-1)+24)
      end
      i += 1
    end
  end
  
  # Figures EXP-gain to display.
  def draw_actor_exp(actor, x, y)      
    exp = $game_troop.exp_total * actor.final_exp_rate.to_i
    text = "+" + exp.to_s + " XP"
    draw_text(x, y, Graphics.width, line_height, text)
  end
end

# Removes exp-window from the screen. Otherwise, from what I've observed, it
# would either close prematurely (ie: before the level-up messages were done),
# or just stay on the screen.
class Game_Map
  def refresh
    BattleManager.window_dispose
    @events.each_value {|event| event.refresh }
    @common_events.each {|event| event.refresh }
    refresh_tile_events
    @need_refresh = false
  end
end